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network technologies

lesson 3 understanding the OSI model

Question	Answer
what is the meaning of the acronym Please Do Not Throw Sausage Pizza Away for the OSI model?	Application Presentation Session Transport Network Data Link Physical
What are the advantages of the OSI model?	a. It has encouraged creation of industry standards. Incorrect b. Layers interact only with adjoining layers. Incorrect c. Network communication processes are segmented.
What layer of the OSI model interacts with the presentation layer and supports DNS?	application
What is the primary protocol that clients use to transfer data to and from web servers?	HTTP
What protocol is used to transfer files to and from an FTP server?	FTP
T/F Post Office Protocol is an e-mail protocol that clients use to retrieve e-mail from a POP3 server.	TRUE
What protocol is the primary protocol that transmits e-mail messages to and between mail servers?	SMTP
What layer of the OSI model interacts with the session and application layers by acting as a translator and determining how to format and present data?	Presentation
What layer of the OSI model is responsible for data compression and decompression?	Presentation
What layer of the OSI model is responsible for establishing a session?	session
t/f The session layer manages connections.	true
What layer of the OSI model handles flow control?	transport
What protocol is a set of rules that provides guaranteed delivery of data?	TCP
What protocol is a set of rules that offers a best-effort of delivery?	UDP
How many ports are available for either TCP or UDP?	65,536
What layer of the OSI model is responsible for determining the best route for data to travel to its destination?	NETWORK
What protocol resolves IP addresses into the physical address or MAC address?	ARP
What routing protocol is used on internal networks?	RIP
What is the primary device that works on the network layer?	ROUTER
What layer of the OSI model is concerned with data delivery on the LAN?	DATA LINK
What layer of the OSI model consists of two sublayers?	DATA LINK
Where does the MAC address reside on the OSI model?	DATA LINK
What layer of the OSI model defines media, such as cables and connectors?	PHYSICAL
A ? is a unit of data at layer 3.	PACKET
A ? is a unit of data at layer 2.	FRAME
A ? is the unit of data at layer 1 and consists of ones and zeros.	BIT
The ? model is a four-layer model created in the 1970s by the DoD.	TCP/IP
What layer of the TCP/IP model uses protocols to access network resources?	APPLICATION
What layer of the TCP/IP model controls data transfer on the network by managing sessions between devices?	TRANSPORT
What layer of the TCP/IP model controls the movement and routing of packets between networks?	INTERNET
What layer of the TCP/IP model defines how data is transmitted onto the media?	LINK

Created by: Yusosweet1

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